Churn



(Nu Model.) Q I J. A. D. HARPER & D. B. SMITH.

OHURN.

PatentedDec. 1, 1896.

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UNITED STATES PATENT OFFICE.

JOHN A. D. HARPER AND DANIEL R. SMITH, OF MAGNOLIA, ARKANSAS.

CHURN.

SPECIFICATION forming part of Letters Patent No. 572,484, dated December1, 1896.

Application filed November 23, 1894. erial No. 529,761. (No model.)

To all whom it may concern.-

Be it known that we, JOHN A. D. HARPER and DANIEL R. SMIrH,citizens ofthe United States, residing at Magnolia, in the county of Columbia andState of Arkansas, have invented a new and useful Churn Driving-Gear, ofwhich the following is a specification.

The invention. relates to churns, and particularly to means forattaching to a receptacle the dasher-operating mechanism, suitableadjustment of the parts being attainable to suit the receptacle and thelength of the dasher-staif.

Further objects and advantages of this invention will appear in thefollowing description, and the novel features thereof will beparticularly pointed out in the appended claim.

In the drawings, Figure 1 represents a perspective view of adasher-operating mechanism embodying our improvement applied to areceptacle. Fig. 2 is a vertical section of Fig. 3 is a detail inperspective of one of the clamp-shoes which engage the receptacle. Fig.4 is a detail section, taken horizontally, of a clamp-shoe and operatingmeans, showing the contiguous portion of the receptacle.

Similar numerals of reference indicate corresponding parts in all thefigures of the drawings.

1 designates a receptacle, which may be of any preferred form, but whichis preferably cylindrical with a tapering body, and 2 a dasher-staffhaving the usual dasher-blades 3, said staff projecting slightly abovethe top or cover of the receptacle. The dasher-opcrating mechanism iscarried by a frame, including a horizontal base-plate 4, disposedtransversely across the top of the receptacle and out of contacttherewith. This plate is provided at each end with a depending lug 5,which are spaced apart agreater distance than the diameter of thereceptacle and form bearings for the clamping-screws 6, which arethreaded in openings therein. The screws'G terminate at their outer endsin enlargements or heads 7, by which they may be grasped for adjustment.

Formed in the base-plate at each end adjacent to the inner sides of thelugs 5 are longitudinal slots 8, to receive the stems 9 of clamp-shoes10, said stems being of a length to provide for vertical adjustment ofthe shoes and being held at the desired adjustment by nuts 11. The stemsare also capable of movement longitudinally in their respective slots.The shoes 10 are formed intogral with the stems 9 and have their innerfaces downwardly and outwardly beveled, as at 12, for the reception ofthe arc-shaped sheet-metal shoe-plates 13.

Rising vertically from the plate 4 are the side plates 14 of a brackethaving a closed upper end formed by a bar 15. The bracket is open frontand rear to give access to its interior.

Formed in the center of the plate 4 is an opening 16, which iscounterbored to form a rabbeted seat 17, and mounted revolubly in thisopening 16 is a spindle 18, which extends upwardly through an alinedopening 19 in the top of the bracket. Fixed to theshaft 18, at a pointjust above the plate 4, is a bevel-gear 20, provided 011 its lower sidewith a dependin g boss 21, to fit revolubly in the seat 17, said gearbeing secured to the spindle by a setscrew or its equivalent, wherebythe spindle may be extended more or less below the baseplate to suit theposition of the upper end of the dasher-staff. This gear 20 is adaptedto ,mesh with a driving-gear 22, fixed to the inner end of thedriving-shaft 23. The driving-shaft is j ournaled in one of the sideplates 14 and in a similar terminal plate 24, which rises verticallyfrom the base-plate, said shaft terminating at its outer end in acrank-arm 25.

The shaft 18 extends above the cross-bar 15 and is provided at or nearits upper end with fan-blades 26, preferably two in number, to furnish adraft of air calculated to cool the atmosphere surrounding the personoperating the churn.

Below the plate 4 the shaft 18 is provided with a socket '27 to receivethe upper squared end of the dasher-shaft 2. This socket consists of acircular head having an angular recess adapted for the reception of theupper end of the dasher-shaft, a set-screw 28 being provided, wherebythe two parts are rigidly connected.

The dasher-operating mechanism embodying our invention may be employedin connection with any ordinary construction of receptacle and dasher inwhich the dasher-staff projects above the plane of the top or cover ofthe receptacle, and the adjustment of the collar2l on the spindle 18 isarranged to allow the necessary projection of the lower end of thespindle below the plane of the base-plate 4cto suit the extent ofprojection of the upper end of the dasher-staff above said top or cover.

If desired, the operation of securing the collar 21 to the spindle maybe postponed until after the base-plate has been secured to thereceptacle by means of the clamping-shoes provided for that purpose, andthe bearin g of the shoes upon the desired portions of the exteriorsurface of the receptacle may be attained by the adjustment ofthe nuts11, which are threaded upon the stems of said shoes. Subsequent to thisvertical adjustment of the shoes the setscrews (3 should be turned tocause the necessary frictional contact of the shoes with the sides ofthe receptacle to lock the base-plate in place. This relative adjustment of the spindle and collar 21, together with the verticaladjustment of the shoes an d the means for forcing the shoes against theside of the receptacle at any vertical adj ustment thereof, provides foraccurately fitting the dasher-operating m echanism to the receptacle toinsure the proper operation of the parts without unnecessary friction.

We have providedone of the wings of the fan with a hinge and hook bywhich it may be lowered and allowed to swing in an approximatelyvertical position. The centrifugal force due to the rotation of thespindle will cause the hinged wing or blade to incline outwardly at anangle sufficient to avoid contact with the open-sided bracket 14,whereby the current of air produced by the depending blade will bedirected against the top of the receptacle.

From the above description it will be seen that the stems 9 and engagingnuts 11 merely support the clamp-shoes 10 at the desired distance belowthe plane of the base-plate, and that the shoes, having the arc-shapednuts 11 are practically relieved of strain, as the set-screws 6 andbrackets 5 hold the baseplate firmly in position.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the spirit orsacrificing any of the advantages of this invention.

Having described our invention, what We j claim is In a churnattachment, the combination with a receptacle having a tapering body andthe dasher of ahorizontal base-plate adapted to be arranged transverselyabove the receptacle and provided with oppositely-locatedlongitudinally-disposed slots, dasher-operating mechanism supported ontop of the base plate, oppositely-located clamp-shoes 10, arranged belowthe base-plate and provided with upwardly-disposed threaded stemscarrying binding-nuts 11, and having a vertical and longitudinaladjustment in said longitudinally-disposed slots, said clamp-shoes beingprovided with inner beveled faces 12 corresponding to the taper of thebody of the receptacle, segmental shoe-plates l3 fitted to the innerbeveled sides of the clamp-shoes, fixed brackets depending from theextremities of the base-plate, and set-screws 6, mounted in saidbrackets and working against the outer sides of said clamp-shoes,substantially as set forth.

In testimony that we claim the foregoing as our own We have heretoaffixed our signatures in the presence of two witnesses.

JOHN A. D. HARPER. DANIEL B. SMITH. WVitnesses:

W. H. WARNocK, J. A. ROBERTSON.

